angular clearance

例句：

1. 1. The car'sangular clearance is critical for safe driving.
   汽车的角形间隙对于安全驾驶至关重要。
2. 2. The engineer calculated the necessary angularclearance for the new design.
   工程师计算了新设计所需的必要角形间隙。
3. 3. Theaircraft had to clear a significant angularclearance to land.
   飞机必须清除相当大的角形间隙才能降落。